Milking-machine.



G. E. JONSSON.

MILKING MACHINE.

APPLIGATION FILED 0017, 1909. I

965,193, Patented July 26, 1910.

3 SHEETS-SHBET 1.

Zllit H6532; [n venlor M y zmm MM" G. E. JONSSON.

MILKING MACHINE.

APPLICATION FILED 0017, 1909.

Patented July 26, 1910.

3 SHEETS-SHEET 2.

1 I I l 1 l r|| YLIILIQIIIIIII Z/liinesses G. B. JONSSON.

MILKIN G MACHINE.

APPLICATION FILED 001'. 7, 1909.

Patented July 26, 1910.

3 SHEETS-SHEET 3.

:6 72 esse s t. r a e V GUST AF- EMIL JONSSON, OF HERRLJ'UNGA, SWEDEN.

MILKING-MAGHIIN'E.

scares.

' Specification of Letters Patent. t t July 6, 1 p,

Application filed October 7, 1909. Serial No. 521,628.

To all whom it may concern:

Be it known that I, GUsrAr EMIL JonssoN, a subject of the King ofSweden, residing at Herrljunga, in the Kingdom of Sweden, have inventednew and useful Improvements in Milking-Machines, of which the followingis a specification, reference being had to the drawings accompanying andforming a part hereof.

This invention relates to milking machines. I

Milking machines hitherto constructed have been adapted to be hung,during working, under or near the udder of the cow. Itisobvious that insuch case the machine must be yielding, since it would otherwise beimpossible touse the machine on different animals, as the form and sizeof the udder varies inanimals. The yielding suspension has, however, aserious drawback in that the machine is liable to be displacedrelatively to the udder even by. small movements of the cow, due to thecomparatively heavy machine beingimpeded by inertia so as not to be ableto quickly respond to the movements of the cow. Such a milking machineis, therefore, liable to lose its grip on the teats and the milkingoperation in such a case cannot be continued until the machine has beenreadjusted.

The object of the present invention is to avoid this drawback and toprovide a milking machine which under all circumstances operates quitesatisfactorily.

The invention consists, chiefly, in that the heavier portion of themachine, 71. e. the box, frame or the like containing or holding thedriving members and mechanism, is attached to the 003v at acomparatively great distance from the udder, preferably ust behind theforelegs of the cow. By this means it is made possible to rigidly attachthe said part of-the machine to the cow so that it cannot be displacedby quick movements of the cow. The teat cups are suitably carried bylong arms or the like pivotally connected to the part of the machinerigidly attached to the cow, said arms being actuated by.

' springs or the like tending to keep the teat cups yieldingly pressedagainst the udder so as to respond to the movements of the animal.

7 The invention further comprises the construction and combination ofparts hereinafter more particularly described.

In the drawings, Figure 1 shows in what bodiment of the machine, Fig. 4showingthe rear part and Fig. 5 the fore part of the said machine.

Referring to Figs. 1-3 of the drawings, the driving parts of the milkingmachine are inclosed in a box 1 made of some light and strong material,such as an alloy of aluminium. The rear part of the box (in Figs. 2 and3 the left part thereof) forms four cylinders 2. Placed in, the saidcylindersare slides 3 adapted to be locked' in po'sltion by set screws4. J ournaled in each slide, preferably by a ball-joint 6, is an arm 5which is thus adapted to swing at a small angle in all directions. Thearms 5 are made of tubes and are of such a length that the teat cups 7attached to their free ends of the cow. The teat cups are kept pressedagainst the udder-by spiral springs 8, one for each arm 5. Each springis attached at one end-to a hook 9 on the corresponding arm, while theopposite end of the spring is attached to a lug 10 projecting upwardlyfrom the corresponding slide. If desired, the springs may be providedwith a tensionregulating device so that the pressure of the teat cupsagainst the udder can be varied at will.

The milking organ of each teat cup consists of a plate 11 and a roller12 elastically attached thereto. In operating the teat the roller 12first presses against the teat and cuts off the interior thereof fromthe udder, whereupon the plate 11 presses out the milk from the teat.The plate is attached to a rod 13 movable longitudinally within thehollow arm 5 and inserted into a hollow rod 14 connected by a joint 15.to a connectingrod. Each connecting-rod consists of two slidablyconnected parts 16 and 17 kept together by a spring 18. Placed aroundthe rod 13 is another spiral spring 19 acting to move the rods 13 and14; apart, said movement being, however, prevented by a pin attached'tothe rod 13 and projectinginto a slot 20 in the rod 14. Theconnecting-rods 17 are suitably driven by cranks and cogthe arm 5 so asto strike the ring 24 in a certain position of the rod 13 and t erebyprevent the plate 11 from exerting ya {harder pressure on the teat thanadmittedhby the ring 24 in its adjusted position. l

Placed on the interior part 16 of each connecting-rod is a series ofratchet teeth 26 coiiperating with a pawl 28 pressed inwardly by aspiral spring. The pawl may be disengaged by hand and is so arranged asto be able to slide over the ratchet teeth when the part 17 of theconnecting-rod is moved by its crank toward the right of Fig.'

2, whereas it engages the teeth ultimately passed when the part 17 movesin the opposite direction. By this means an automatic adjustment of thelength of the connecting-rod is elfected during the first revolution ofthe cog-wheel 21 so that the length of the connecting-rod will alwayscorrespond to the adjustment of the slide 3.

The machine is attached to the cow by means of a plate 29 of a suitableform which is 111m by girts under the belly of the cow. The p ate 29 isprovided with broad, suitably springy pawls 31 adapted to enter intocorresponding slots 32 in the box so that the latter need only bepushed'over the pawls in order to attach the machine to the plate 29 andthereby to the cow.

The machine works as follows: \Vhen the machine has been attached to thecow, the slides 3 are first adjusted so that the teat cups are justbeneath their corresponding teats which are thereupon introduced intothe teat cups. Thereupon the rings 24 are adjusted corresponding to thethickness of the teats, whereupon the machine is ready to work. Duringthe first revolution of the cranks the connecting-rods obtain thecorrect length and the milking thereupon continues as long as there ismilk to be drawn from the udder. When a particular teat has been milked,the corresponding milking organ may be brought out of action by thecorresponding ratchet pawl 28 being disconnected so that theconnecting-rod cannot transmit motion to its milking organ.

It is obvious that all? the milking devices need not have theirconnecting rods self-adjustable in length, since it is always possibleto so attach the milking machine to the cow that one pair of teat cups,for instance the two fore ones, are just beneath the correspondingteats, without any adjustment being required, the other (rear) teat cupsbeing thereupon adjusted in position by correspondingly adjusting theslides placed at the rear ends of the box, whereby the'correspondingconnecting rods will automatically adjust their lengths during the firstrevolution of the cranks. Adjustable connections, such as slides andadjustable connectin rods are therefore needed only for one pair of teatcups.

In Figs. 4 and 5, I have shown a part of a milking machine correspondingto the part shown in Fig. 2 but in which the slide and the means forautomatically adjusting the length of the connecting red are dispensedwith. The milking machine shown in Figs. 4 and 5 also in some otherrespects differs slightly from the embodiment of the machinehereinbefore described.

The tube 33 carrying the teat-cup 34 and inclosing the connection 35, 36between theteat-operating member 37 and the connecting rod 38, 39 isshown provided at its fore end with a ball 40 lying in a stationarysocket at the rear end of thebox 41. The two-part connection 35, 36 issubstantially the same as in the machine hereinbefore described. Alsothe connecting rod is made in two parts 38, 39 which are locked inposition by a pawl 42 movable in a casing 43 attached to the part 39 andadapted to engage a corresponding recess 44 in the part 38. When theteat has been milked, the pawl 42 may be brought out of engagement withthe rod 38 by pulling down the handle 45 against the action of thespring 46.

It. may sometimes be desirable to cause the teat cups to move slightlyup and down, particularly at the end of the milkin operation when theudder is nearly emptie This may be performed by a double-armed lever.

47 adapted to swing about a fulcrum 48 in the box 41. Attached to therear end of the lever 47 is a ring 49 bearing at its upper part on thetube 33 so as to cause the said tube to partake in the movement of thelever 47. Placed at the fore end of the said lever is a roller 50hearing on the edge of a cam 51 attached to an axle 52 mounted in thebox 41. Placed on the axle 52, and preferably running loosely thereon,is a sprocketwheel 53 to which motion is imparted by a chain 54 runningover a sprocket wheel 55 on one of the crank shafts. Obviously there arefour cams on the axle 52, each operating one lever connected to thecorresponding teat cup. Placed 'at one side of the wheel 53 is the onepart of a friction clutch adapted to be brought into engagement withanother part of the friction clutch attached to the axle 52. Theconnection and disconnection of the two parts of the friction clutch maybe performed by a fork 56 having a handle 57 by which the wheel 53 orthe axle 52 may be moved longitudinally in one or the other direction.It will thus be ossible to throw the mechanism for lowermg and raisingthe teat cups into action at the end of the milking operation so as tocause the teat cups to slightly clasp the udder and thereby facilitatethe drawing off of the remainder of milk. The cams are preferably soplaced on the axle 52 that, when the.

any suitable construction. In the embodiment illustrated the tensioningdevice consists of a lever 59 pivoted at a point 60 above the tube 33and having preferably in level with the axis of the tube an eye 61 towhich the spring 58 may be attached, said lever having at its lower enda springpressed pawl 62 engaging a ratchet .segment 63 at the lower sideof the tube 33. The pawl 62 may be attached by ins 'or the like to anouter sleeve 64v by w ich the pawl may be thrown out-of engagement withthe teeth of the ratchet-segment when the tension of the spring 58 is tobe adjusted.

Thateat cup 34 is shown inserted into a cross-head 65 attached to thetube 33 and provided at its lower end with a hinged screw 66 having ahead 67 for securing the cup in position. The teat cups mayadvantageously be made of celluloid in order to be as .light aspossible. Also the arms carrying the teat cups are made'of lightmaterial so that they have but little inertia and easily partake in themovements of the udder, or the cow.

I claim:

1. In a milking machine, the combination of a box adapted to be rigidlyattached to the cow, at a distance from the udder, arms attached to thesaid boxv in such a manner as to be able to swing in all directions,teat cups carried by the said arms, milking organs placed in the saidteat cups, means placed in the box for operating the said milkingorgans, and springs adapted to keep the teat-cups yieldingly pressedagainst the udder, substantially as and'for the purpose set forth.

2. In a milking machine, the combination of a box adapted to be rigidlyattached to the. cow, at a distance from the udder, arms attached to thesaid box in such a manner as to be able to swing in all directions, teatcups carried by the said arms, milking organs placed in the said teatcups, means placed in the box for operating the said milking organs,springs adapted to keep the teat cups yieldingly pressed a ainst theudder, and means for regulating te tension such a manner as to be ableto swing in all directions, teat cups carried b the said arms,milkingorgans placed in t e said teat cups, means placed 1n the box foroperating the said milking organs, s rings adapted to keep the teat cupsyielding y pressed against the udder, and means for imparting to thearms carrying the teat cups an n and downward swinging movement causingthe teat cups to softly clap the udder, substantially as and for thepurpose set forth.

4. In a milking machine, the combination of a box adapted to be rigidlyattachedto the cow, arms attached to the said box in such a manner as tobe able to swing in all directions, teat cups carried by the said arms,milking organs placed in the said teat cups, means placed in the box foroperating the said milking organs, springs adapted to keep the teat cupsyieldingly pressed against the udder, means or imparting to the armscarrying the teat cups an upand downward swinging movement, and meansfor throwing the said latter means into and out of operation,substantially as and for the purpose set forth.

5. In a milkin machine, the combination of a box adapted the cow, at adistance from the udder, arms attached by ball-joints to the said box,teat cups carried by the said arms, milking organs placed in the saidteatcups, means placed in the box for operating the said milking organs,and springs adapted to keep the teat cups yleldingly pressed against theudder, substantially as and for the purpose set forth.

6. In a milking machine, the combination of a box adapted to be rigidlyattached to .the cow, arms adjustably connected to the said box in sucha manner as to be able to swing in all directions, teat cups carried bythe said arms, milking organs placed in the said teat cups, means placedin the box for operating the said milking organs, connections betweenthe said operating means and the milking organs. and springs adapted toto be rigidly attachedto set forth.

- a manner as to be able to swing in all direcof a box adapts to berigidly attached to in the arms yieldingly pressed against the utfiier,substantially as and for the purpose 8. In a milkin machine, thecombination of a box adapte to be rigidly attached to the cow, atadistance from the udder, hollow arms attached to the said box in suchtions,'teat cups carried by the said arms, milking organs placed in thesaid teat cups, means laced "in the box for operating the said milkingorgans, connections between the said operating means and the milkingorgans extending through the hollow arms, and springs adapted to keepthe teat cups yieldingly pressed against the udder, substantially as andfor the purpose set forth.

9. In a'milkin machine, the combination the cow, arms attached to thesaid box in such a manner as to be able to swing in all directions, teatcups carried by the said arms, milking organs placed in the said teatcups, means placed in the box for operating the said milking organs,compressible connections between the said operating means and themilking organs, and springs adapted to keep the teat cups yieldinglypressed againstthe udder, substantially as and for the purpose setforth.

10. In amilking machine, the combination of a box adapted to be rigidlyattached to the cow at a distance from the udder, arms attached to thesaid box in' such a manner as to be able to swing in all directions,teat cups carried at the ends of the said arms, milking organs placed inthe said teat cups, means placed in the box for operating the saidmilking organs, connections between the said operating means and themilking organs, means.for preventing the milking organs from pressingtoo strongly on the teats, and springs adapted to keep the teat cupsyieldingly pressed against the udder, su stantially as and for thepurpose set forth.

11. In a milking machine, the combination of a box adapted to be rigidlyattached to the cow, arms attached to the said box in such a manner asto be able to swing in all directions, teat cups carried by the saidarms, milking organs comprising a plate and a roller yieldingly mountedat the top of the-said plate, means placed in the box for operating thesaid milking organs, connections between the said operating means andthe milking organs, and springs adapted to keep the teat cups yieldinglypressed against the udder, substantially as and for the purpose setforth.

12. In a milking machine,-the combination of a box adapted to be rigidlyattached to the cow, arms adjustably connected to the said box in such amanner as to be able to swing in all directions, teat cups carried bythe said arms, milking organs placed in the said teat cups, adjustablemeans placed in the box for operating the said milking organs,connections between the said operating means and the milking organs,means for automatically adjusting the said operating means, and springsadapted to keep the teat cups yieldinglypressed against the udder,substantially as and for the purpose set forth.

13. In a milking machine, the combination of a box adapted to be rigidlyattached to the cow, arms adjustably connected to the said box in such amanner as to be able to swing in all directions, teatvcups carried bythe said arms, milking organs placed in the said teat cups, meanscomprising a crank and a connecting-rod placed in the box for operatingthe milking organs of a teat cup, a connection between theconnecting-rod and the milking organ, means for automaticall adjustingthe length of the connecting-rod, and springs adapted to keep the teatcups yieldingly pressed against the udder, substantially as and for thepurpose set forth.

14. In a milking machine, the combination of a. box adapted to berigidly attached to the cow, arms adjustably connected to the saidbox insuch a manner as to be able to. swing in all directions, teat cupscarried by the 'said arms, milking organs placed in the said teat cups,a revoluble crank shaft mounted in the said box,a telescopicconnecting-rod driven by the said crank-shaft, ratchet teeth on one partof the said connecting-rod, a ratchet pawl at theother part thereofadapted to engage one of the said ratchet teeth, a connection betweenthe said connecting-rod and the corresponding milking organ, and springsadapted to keep the teat cups yieldingly pressed against the udder,substantially as and for the purpose set forth.

15. In a milking machine, the combination of a girth adapted to beapplied to the cow, pawls attached to the said girth, a box having slotsadapted to be engaged by the said pawls, arms connected to the said boxin such a manner as to be able to swing in all directions, teat cupscarried by the said arms, milking organs placed in the said teat cups.means placed in the box for operating the said milking organs, andsprings adapted to keep the teat cups yieldingly pressedagainst theudder, substantially as and for the purpose set forth.

GUSTAF EMIL JoNs'soN.

